Fair Value Disclosures and Reporting and Fair Value Measurements - Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Collateralized Loan Obligations [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance of recurring Level 3 assets		$ 195,707
Transfers out of Level 3		(195,707)
Ending balance of recurring Level 3 assets	$ 195,700
Corporate Bond [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance of recurring Level 3 assets	57,435	27,530
Included in other comprehensive income	(5,147)
Ending balance of recurring Level 3 assets	$ 52,288	$ 46,539